[LL FIR] rename testdata to testData to avoid copyright generation

We exclude testData pattern from copyright scope

analysis/low-level-api-fir/testData/lazyResolve/compilerRequiredAnnotationsOnPropertyDelegate.kt

@@ -0,0 +1,7 @@
+annotation class Anno(val s: String)
+
+@delegate:Deprecated("delegate")
+@delegate:Anno("delegate")
+val memberP<caret>roperty by lazy {
+    "42"
+}